Non-woven laminated fabric-like material
CA 1321324 C · Owner: Maddern, Peter · Inventors: Maddern, Peter; Currie, Kenneth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Non woven material comprising a web of spunbonded polymeric filaments wherein the web is impregnated with a thermal stabilising agent e.g. a fluorocarbon before, being hot calendered on at least one side. This results in material having an outer surface which is much more resistant to abrasion than an untreated spunbonded surface. The non-woven material may comprise a laminate of layers e.g. two layers of spunbonded filaments sandwiching a central layer of melt-blown fibres, the laminate being impregnated with a thermal stabilising agent before hot calendering on at least one side.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted August 17, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 17, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.